create addShelf method in Field class

.idea/workspace.xml

@@ -2,10 +2,9 @@
 <project version="4">
   <component name="ChangeListManager">
     <list default="true" id="828778c9-9d97-422f-a727-18ddbd059b85" name="Default Changelist" comment="">
-      <change afterPath="$PROJECT_DIR$/shelf.py" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/.idea/misc.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/misc.xml" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/.idea/wozek.iml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/wozek.iml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/field.py" beforeDir="false" afterPath="$PROJECT_DIR$/field.py" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/shelf.py" beforeDir="false" afterPath="$PROJECT_DIR$/shelf.py" afterDir="false" />
     </list>
     <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
     <option name="SHOW_DIALOG" value="false" />
@@ -123,8 +122,16 @@
       <workItem from="1589745409339" duration="739000" />
       <workItem from="1589752301424" duration="1007000" />
       <workItem from="1589753322316" duration="835000" />
-      <workItem from="1589814601057" duration="822000" />
+      <workItem from="1589814601057" duration="1397000" />
     </task>
+    <task id="LOCAL-00001" summary="create Shelf">
+      <created>1589815443652</created>
+      <option name="number" value="00001" />
+      <option name="presentableId" value="LOCAL-00001" />
+      <option name="project" value="LOCAL" />
+      <updated>1589815443652</updated>
+    </task>
+    <option name="localTasksCounter" value="2" />
     <servers />
   </component>
   <component name="TypeScriptGeneratedFilesManager">
@@ -143,6 +150,10 @@
       </map>
     </option>
   </component>
+  <component name="VcsManagerConfiguration">
+    <MESSAGE value="create Shelf" />
+    <option name="LAST_COMMIT_MESSAGE" value="create Shelf" />
+  </component>
   <component name="com.intellij.coverage.CoverageDataManagerImpl">
     <SUITE FILE_PATH="coverage/AL_2020$main.coverage" NAME="main Coverage Results" MODIFIED="1589754127142" SOURCE_PROVIDER="com.intellij.coverage.DefaultCoverageFileProvider" RUNNER="coverage.py" COVERAGE_BY_TEST_ENABLED="true" COVERAGE_TRACING_ENABLED="false" WORKING_DIRECTORY="$PROJECT_DIR$" />
     <SUITE FILE_PATH="coverage/wozek$main.coverage" NAME="main Coverage Results" MODIFIED="1589556038208" SOURCE_PROVIDER="com.intellij.coverage.DefaultCoverageFileProvider" RUNNER="coverage.py" COVERAGE_BY_TEST_ENABLED="true" COVERAGE_TRACING_ENABLED="false" WORKING_DIRECTORY="$PROJECT_DIR$" />

field.py

@@ -1,4 +1,5 @@
 import pygame
+from shelf import Shelf
 
 
 class Field:
@@ -14,6 +15,7 @@ class Field:
         self.is_occupied_by_agent = is_occupied_by_agent
         self.cost_of_travel = cost_of_travel
         self.neighbors = []
+        self.shelves = []
 
         # Te parametry są potrzebne do algorytmu A*
         self.g = 0
@@ -41,4 +43,8 @@ class Field:
         if self.y > 0 and board[self.y - 1][self.x].is_shelf == False:
             self.neighbors.append(board[self.y - 1][self.x])
         if self.y < 9 and board[self.y + 1][self.x].is_shelf == False:
-            self.neighbors.append(board[self.y + 1][self.x])
+            self.neighbors.append(board[self.y + 1][self.x])
+
+    def addShelf(self):
+        shelf = Shelf(len(self.shelves)+1)
+        self.shelves.append(shelf)

shelf.py

@@ -1,12 +1,11 @@
 import pygame
 
+
 class Shelf:
 
-    def __init__(self, id, field):
+    def __init__(self, id):
         self.id = id
-        self.field = field
         self.products = []
 
     def addProduct(self, sweet):
         self.products.append(sweet)
-